Spin-Orbit Interactions in Osmium Complexes
- Autores: Asanov I.1, Fedorenko A.1, Vasilchenko D.1, Grebenkina M.1, Lavrov A.1, Korol’kov .1, Kriventsov V.2, Trubina S.1, Asanova T.1
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Afiliações:
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of RAS
- Federal Research Center Boreskov Institute of Catalysis
- Edição: Nº 6 (2023)
- Páginas: 3-14
- Seção: Articles
- URL: https://journals.rcsi.science/1028-0960/article/view/137761
- DOI: https://doi.org/10.31857/S1028096023060043
- EDN: https://elibrary.ru/DHQHYU
- ID: 137761
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Resumo
Osmium compounds with the Os5d4 electron configuration and an octahedral environment of neighboring atoms attract much attention due to the influence of the spin-orbit interaction on the appearance of magnetic properties in materials. XANES spectroscopy makes it possible to obtain information about the magnitude of the spin-orbit interaction from measuring the intensity ratio of lines near the absorption edges. The influence of the spin-orbit interaction on the XANES OsL2,3 spectra in osmium compounds having an octahedral halogen environment of osmium atoms has been studied. Two types of systems have been investigated: isolated osmium clusters in complex compounds and OsCl4 compound containing polymeric chains of Os connected by bridging Cl atoms. Magnetic susceptibility measurements show a non-magnetic ground state and Van Vleck paramagnetism in the case of isolated clusters and a non-zero magnetic moment over the entire temperature range in OsCl4. As a result of measurements of the XANES spectra, high values of the line intensity ratio near the OsL3/L2 absorption edges have been obtained, which is associated with a strong influence of the spin-orbit interaction on the electronic structure. Theoretical analysis of the XANES spectra of Os compounds with different ligands and outer-sphere cations shows that the electronic structure and magnetic properties depend on the spin-orbit interaction, the crystal field splitting, the electron pairing energy, and non-cubic distortions of the Os environment.
Sobre autores
I. Asanov
Nikolaev Institute of Inorganic Chemistry, Siberian Branch of RAS
Autor responsável pela correspondência
Email: asan@niic.nsc.ru
Russia, 630090, Novosibirsk
A. Fedorenko
Nikolaev Institute of Inorganic Chemistry, Siberian Branch of RAS
Email: asan@niic.nsc.ru
Russia, 630090, Novosibirsk
D. Vasilchenko
Nikolaev Institute of Inorganic Chemistry, Siberian Branch of RAS
Email: asan@niic.nsc.ru
Russia, 630090, Novosibirsk
M. Grebenkina
Nikolaev Institute of Inorganic Chemistry, Siberian Branch of RAS
Email: asan@niic.nsc.ru
Russia, 630090, Novosibirsk
A. Lavrov
Nikolaev Institute of Inorganic Chemistry, Siberian Branch of RAS
Email: asan@niic.nsc.ru
Russia, 630090, Novosibirsk
I. Korol’kov
Nikolaev Institute of Inorganic Chemistry, Siberian Branch of RAS
Email: asan@niic.nsc.ru
Russia, 630090, Novosibirsk
V. Kriventsov
Federal Research Center Boreskov Institute of Catalysis
Email: asan@niic.nsc.ru
Russia, 630090, Novosibirsk
S. Trubina
Nikolaev Institute of Inorganic Chemistry, Siberian Branch of RAS
Email: asan@niic.nsc.ru
Russia, 630090, Novosibirsk
T. Asanova
Nikolaev Institute of Inorganic Chemistry, Siberian Branch of RAS
Email: asan@niic.nsc.ru
Russia, 630090, Novosibirsk
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